Mitsubishi Electric 9900D Series Owner Technical Manual page 66

Table 7.2 UPS Module Fault Code List
Code
Status
indication
message
(Note 2)
MF202 INVERTER UV.
MF203 INVERTER OC.
MF204 O/P CIRCUIT ABNL.
MF207 ZERO PHASE OC.
MF208 CTRL.CIRCUIT ERR.
MF210 52C ABNORMAL
MF213 OVERTEMPERATURE
MF214 COOLING FAN ABNL.
MF217 INVERTER OV.
MF230 ZERO PHASE OC.
MF253 CTRL.CIRCUIT ERR.
MF254 COOLING FAN ABNL
MF256 O/P VOLTAGE ABNL.
MF301 CTRL.CIRCUIT ERR.
MF302 CTRL.CIRCUIT ERR.
MF303 CTRL.CIRCUIT ERR.
MF305 CTRL.CIRCUIT ERR.
MF306 CTRL.CIRCUIT ERR.
MF309 INV.VOLTAGE ABNL.
MF320 CTRL.CIRCUIT ERR.
MF331 CTRL.CIRCUIT ERR.
9900D SERIES UPS
OWNERS / TECHNICAL MANUAL
Output voltage dropped.
Detection of inverter overcurrent.
Detection of a large variation of the reference error
signal (current reference and actual current).
Inverter zero-sequence overcurrent.
Cross current is abnormal.
Error to open the contactor 52C.
Heatsinks temperature exceeds thermal settings.
Thermal relay activated protection.
Detection of inverter output phase overvoltage.
Detection of zero-sequence overcurrent.
Discrepancy between output voltage and inverter
voltage, or between output voltage and bypass
voltage.
Fan Failure (Minor)
Output voltage is out of the specified range.
AD reference has an abnormal value.
Detection of an external interruption during the
software execution.
Timer does not reset in the specified period (WDT
settings)
Detection of an abnormal clock speed in the DSP or
FPGA.
Control power supply voltage is below the specified
level.
Inverter voltage is out of the specified range.
Cable disconnection in the parallel interface board
during load supply.
Cable disconnection in the main driver PCB (Phase U)
MITSUBISHI ELECTRIC 9900D SERIES UPS
Meaning
Page Number:
7-9
External relay
contact
(Note 1)
Major
Major
Major
Major
Major
Major
Major
Major
Major
Major
Minor
Minor
Minor
Major
Major
Major
Major
Major
Major
Major
Major